Chemical Bonding and Molecular Structure Quiz - CBSE Class 11 Science
Free practice quiz: Chemical Bonding and Molecular Structure (CBSE Class 11 Science). 18 multiple-choice questions with answers and explanations. Play online, no sign-up needed.
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Which type of bond involves the sharing of electrons between atoms?
- Ionic bond
- Covalent bond
- Metallic bond
- Hydrogen bond
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Answer: B. Covalent bond
A covalent bond is formed by the sharing of electrons between atoms, typically nonmetals.
What is the bond order in oxygen molecule (O2)?
- 1
- 2
- 3
- 0
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Answer: B. 2
The bond order is calculated as (number of bonding electrons - number of antibonding electrons)/2. In O2, it's 2.
What is the geometry of a molecule with sp2 hybridization?
- Linear
- Tetrahedral
- Trigonal planar
- Bent
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Answer: C. Trigonal planar
sp2 hybridized molecules have a trigonal planar geometry with bond angles of approximately 120 degrees.
Predict the shape of a molecule with AX3E2 (3 bonding pairs and 2 lone pairs) using VSEPR theory.
- Linear
- Tetrahedral
- Trigonal bipyramidal
- T-shaped
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Answer: D. T-shaped
According to VSEPR theory, AX3E2 molecules have a T-shaped geometry due to the repulsion between the lone pairs.
Describe the different types of molecular solids and their properties.
- Molecular solids are classified into covalent, ionic, and metallic.
- Molecular solids are classified based on the type of intermolecular forces (van der Waals, dipole-dipole, hydrogen bonding) present.
- Molecular solids are always crystalline in nature.
- Molecular solids are always amorphous in nature.
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Answer: B. Molecular solids are classified based on the type of intermolecular forces (van der Waals, dipole-dipole, hydrogen bonding) present.
Molecular solids are held together by weaker intermolecular forces, which determine their properties like melting point and solubility.